Twine cutting machine



Aug. 29, 1950 Filed March 5, 1948 o. PIETscH 2,520,286

TWINE CUTTING MACHINE 3 Sheets-Sheet l A TUN/wry 3 Sheets-Sheet 2 FiledMarch 5, 1948 Aug. 29, 1950 o. PlETscH 2,520,286

TWINE CUTTING MACHINE Filed March 5, 1948 3 Sheets-Sheetl 5 a MW Si,

A7 70W/wy Patented Aug. 29, 1950 2,520,286 rwlNE CUTTING MACHINE OttoPietsch, Dryden, Ontario,Y Canada, assignor to Dryden PaperCompany-Limited, Dryden,

Ontario, Canada Application March 5, 1948, Serial No. 13,172

The invention relates to improvements in a twine cutting machine, asdescribed in the present specification and illustrated in theaccompanying drawings that form a part of the same. The inventionconsists essentially of the novel features of construction as pointedout broadly and specifically in the claims for novelty following adescription containing an explanation in detail of an acceptable form ofthe invention.

The objects of the invention are to devise a machine adapted to cuttwine and the like into equal lengths; to furnish a cutting machinewhich will gauge the length of each piece ci twine cut by the same; tofacilitate removing windings of twine or the like from holders or spoolsand cutting same into equal lengths; to

' speed up the manufacture of articles in which Vcord or twine is used;to construct a machine suitably adapted to cut lengths of twine, such astwisted cord made from crepe paper, ordiriaryr;y

string or cord and the like; to contrive an automatic cutting machinefor twine which will minimize labor costs in the manufacture of articlesmade from cord or twine; to make a twine cutting machine which will besimple in construction and inexpensive to manufacture; and, generally,to provide a twine cutting machine which will be dependable andefficient in its use.

In the drawings:

Figure 1 is a plan view of the twine cutting machine.

Figure 2 is a front view of Figure 1.

Figure 3 is a rear view of the cutting machine.

Figure 4 is an end view of the cutting machine.

Figure 5 is an enlarged sectional detail of the twine holder.

Figure 6 is a plan view of the twine feeder and its operating mechanism.

Figure '7 is an enlarged detail of the twine feeder in motion.

Figure 8 is an enlarged detail of the twine feeder housing.

Figure 9 is an end sectional view as taken on the line 9-9 in Figure 8.

Figure 10 is an enlarged rear view showing the tripper in position forholding the twine holder open.

Figure 1l is a front view of the tripper similar to Figure 10, with theexception that the same is in position for releasing the twine holder.

Figure 12 is an enlarged sectional detail of the leader as taken on theline l2-l2 in Figure l.

Like numerals of reference indicate corre-- spending parts in thevarious figures.

In the invention hereinafter described, the

2 Claims. (Cl. 164-68) Vcutting machine is adapted to have a plurality.Y of spools of twisted cord suitably supported with respect to the sameso that the cord on these spools are concentrated into one lead and fedinto the machine.

Referring to the drawings, the twine cutting -machine consists of theframes l5 and i6 which are placed together to substantially mount themechanism therefor. The leader il is suitably mounted on one end of themachiney and is adapted to lead the strands from the spool `I8 to themachine. The leader li evens the tension of the strands so that nooverlapping will occur or no single strand slip and cause short ends.

The leader I1 is suitably mounted on the projecting member I9, whichextends outward from the frame I6. The plate 2!! on the end of thismember I9 has a hole therein, through which the twine passes. The twineis guided through the aperture 2| in the projecting member i9 andthe armmember 22 exerts a downward pressure von the twine. The arm member 22 ispivotally mounted on the projecting member i9 and held in position bymeans of the tension spring 23. In this respect, the arm member 22assures correct tension in the twine as it extends-between the leaderI"l and the feeder 24. Y

The feeder 24 is suitably supported on the frame I6 and thereciprocating tube 25 of the same is slidably supported in the brackets2B and 2.1. The movable grabber 28 is incorporated into the tube 25 andadapted to grip the strands on its forward stroke and release the sameon the backward stroke.

' The movable grabber 28 is adapted to feed the twine forward throughthe guide tube 2S, where it passes through the stationary grabber 30.This Y grabber 30 is operated from the rotating disc 44 drive the blade32.

mounted on the V pulley 34, which is connected to themotor 33 by meansof the belt 35. The V pulley 34 is suitably mounted on the `shaft 36which, in turn,ci has the bevel gear 31 fixedly secured thereon. Thebevel gear 31 en- .gages the bevel gear 38, which is fixed on the shaft39 and adapted to drive the gears 40, 4| andZ. The gear 42 is mounted onthe shaft 43 and the latter, in co-operation with the rotat- K ingoritripper disc 44, forms a crank-shaft. This trip-per disc has therollers 45 and 4S on each side thereof and at opposite edges of thesame. As the tripper plate rotates, the roller 45 engages the arm fa?,thus turning the lever 48 which, in turn, actuates the pull rod 49. Thefree end of the pull rod 4S is connected to the rocker arm 53, which ispivotally mounted on the bracket 5| The stationary grabber'ifconsists ofthe stationaryjaw 52 andthe movable jaw 53 between which the twinepasses as it moves through the tube 29. The movable jaw 53 is connectedto the rocker arm 5i) by the link 54. Thelmovable jaw 53 is xedlysecured to the upright rod 55. The compression springllis supported onthe movable jaw 53 aboutf'the upright -rod 55 and exert-s a downwardpressure on the former, thus gripping the twine between` the same.y andthe stationary jaw 52. As the pull rod 49 is actuated by the lever A8,the movable jaw 53Yis raised,

permitting the twine to pass between the same *adithe stationary jaw52.i The' catch 5'! engages .the cutout 58` intlie shaft? 48-'Aplon whichthe ile-ier Hi8 ismounted; as theilattersis turned up- 'ward Vtoindirectly -raisethe'm'ova'ble jaw 53gA thus holding the sainesubstantiallynin'.a'raised position. As thetripper'fdisc '441' rotatesV'another half turn, the roller; 45 engages'ithe catch' 51'so :las toreleaseftheirlever 48, :thu-s p'ermitting'lthe *movable jaw 53tozzbefci'osed Withfrespect tothe stationary jaw52fby meansofzthe'compression Sispr-ing' 55.

the frame IB and are adapted to slidably sup'jcolrt 'the crossheadfi?.TTliereciprocating2tube`-25 is "i slidably supported in thebracketsf'2?. The movablelg'rabber'Z isffixe'dly secured' on theureciprocating 1tube' 25 and adapted to'rmove "therewith.

The reciprocatingltubeZ consists ofthe'tube l-'sectionsfV 'and'B12/which are Ladaptedf f to :be flsecured within 'the-housing 65 "ofthe movable grabber 28. Theupp'erfandlower jaws E8 andfS-iare'slidaloly'f fitted in the housing-65 and adapted 'to'movehorizontally, thuslop'ening and "closing I-v'vitlrrespect to oneanother. @In this respect, the

links 'l0 and Il are pivotllylmou'ntedfon theo'uter *surface 'of'thehousing-'65." 'Ihe ends "of'the links efill and 'Il are Apivotallyroonnected'ftothefront components connecting theeresshead 6D andtheflinks'-"Ul and? 'H actuate'the latter immediately upon movement of the'crossheadfil in 'either ldirection, thus closing Jor opening"'the jawsj68 'andi with respectV to one another. Inthisiinstance, as thecrossbead'e andfe'eder24move forward, the ljawsfi andi 69- are closed,"vthus feeding the twine forward towardstheknifeor :blade 32, as theseme-movesbackwardlthese jaws are open, thus permittingthe twinetoremain in its forwardlrposition.4` The twine passes 'frmfthefeeder"24`througli the" guide tube '29 tothe cutting blade '32,' and thelength" of fthe :')strandsaftercutting are determined'by the travellbfthis feeder.

"The vsafety 'rod I14' is operated by the crosshead S80 andextends'forward therefrom. to a suitable point =atfthcfend`iof`the guidetube `29. A loop lloreye'i'fis provided fon the'end of the safetyred-'34,' whichis 'adapted-.to guidethe twine from Latheguidettube'S-ZS'- out past the cutting blade-'32,

Lthis point 'the twineg' passes intoither reciprocating tube '25. DuringIthe 'forward movement of the feeder or reciprocating tube 25, the

--nlovarlle grabber incorporated in the same fis-vin a closed position,thus moving the twine forward. 'The twine is fed through the guidetube29-andpassesithe jaws of the stationary grabber 535- whichis in anopen position. The stationary grabber 35i is then closed by the action 1of -the tripperv disc 64 and its components. The

twine extending out past the stationary grabber Sais 'guided by thesafety rod M as the cutting blade comes down to shear the same. Thecrosstwine :is substantially; heldy by: the:tstationary .grabber 3G as'the feeder, orninovaifile grabberf,

whichis in an .'opeirposition, also'rnoves: backi ward. During thisopera-tiomtheleader:ilnmaintains an even tension iiflie stinnds otwinafiis 'the feeder or movable 'rab'berz''et forward movement; :theawe of sanie'. are closed,

thusm'oving the cordfforward',:and the operation as hereinbeforedescribed ASist-repeated.

fItwill` be seen fromv the foregoingU thata' machine has been provided'which will automatically cut-cord, twine andthe like intoequal lengthswith a single. operator attending same',thus2'ef '.fecting a substantialsavingin: labor costs.

'Jpair Vof Vrollers on each` side of said rotatingzdisc lat'l oppositeredges thereof, anv arm-` pivotally Amounted with respect'to Saidfrarne',aileverxedlyseoured with respect'tosaid arm, a pull rodpivotallyconnocted' to said .'lever; a stationary grabber suitablyconnected .to saidfpi11l111od,lone of said rollers beingadaptedztofengage said'arm, thus' opening said stationary.' grabber;ac'atch adapted to retain said arm in position thuslmaintaining saidstationary' grabberin 'anopenv position, and the second of Ysaid rollersbeing adapted 'to v'engage said catch forireleasing'saidarmthusiperinitting ardstationary :grabber to. close, a.

feeder suitably connected to said crossheadand adapted to beactuatedibytne:flatter, a movable grabber incorporated in said feeder,.said `movablev grabberv being I'closedzduringl the` forward movement ofsaid feeder, and salidimovablegrab- .'bei-sbeing openV during/,fthebackward movement of said feeder.

. 2. :In a twinev cutting machine, a frame, a--Inotor supported on saidframe,- arpulley' suitably. con- .'nected to'said motor, a cutingablademounted on said' pulley, a rotating discgear'edto the shaft of saidpulley, a orosshead, a cra-nk' rod Iconnectingfsaid rotating' discfandsaid crosshead, a

ipair of roilers oneachsidev ofisa'id rotating disc at oppositeY edges"thereof, 'an armzpivota-lly 'mounted with respectto sa'id frame, aleverlfx- 75 of said rollers being adaptedito engagefsaidarm,

5 thus opening said stationary grabber, a catch adapted to retain saidarm in position thus maintaining said stationary grabber in an openposition, and the second of said rollers being adapted to engage saidcatch for releasing said arm, thus permitting said stationary grabber toclose, a feeder comprising a housing, tube sections xedly secured ineach end of said housing, a pair of movable jaws slidably accommodatedin said housing, links pivotally connected to said movable jaws and saidhousing, an arm pivotally connected to said crosshead and said links andadapted to open and close said movable jaws as said feeder is moved ineither direction.

OTTO PIETSCH.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name y Date 2,051,491 Lookett Aug. 18, 19362,136,831 Vuiileumier Nov. 15, 1938 2,211,862 Rosenthal Aug. 20, 19402,214,478 Rosenthal Sept. 10, 1940 2,319,099 Abramson May 11, 19432,333,158 Dowd Nov. 2, 1943 2,359,140 Meitner Sept. 26, 1944

